Public bug reported:
When attempting to boot the Ubuntu 24.04 image on an eMMC variant of the
CM5, attached to a CM4 I/O carrier board, the boot hangs fairly early
on, just presumably at the point it attempts to mount the "real" root.
The following error message is repeated on the console:
[ 14.648143] mmc0: mmc_select_hs400 failed, error -84
[ 14.653123] mmc0: error -84 whilst initialising MMC card
This occurs with both the noble release kernel (6.8.0-1004.4), and with
an image built from up to date sources using the noble-updates kernel
(6.8.0-1015.17). I haven't managed to test the noble-proposed kernel
(6.8.0-1016.18) yet.
The issue doesn't occur with the oracular image (with kernel
6.11.0-1004.4).
I'll attach the output from the serial console from as far as it got.
** Affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "mmc-failure.log"
https://bugs.launchpad.net/bugs/2089555/+attachment/5840250/+files/mmc-failure.log
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https://bugs.launchpad.net/bugs/2089555
Title:
mmc0 error on boot with eMMC CM5
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